#include <socket.hh>

Inheritance diagram for TCPSocket:

Public Member Functions
	TCPSocket ()
	Default: construct an unbound, unconnected TCP socket. More...

TCPSocket	accept ()
	Accept a new incoming connection. More...

void	listen (const int backlog=16)
	Mark a socket as listening for incoming connections. More...

Public Member Functions inherited from Socket
void	bind (const Address &address)
	Bind a socket to a specified address with bind(2), usually for listen/accept. More...

void	connect (const Address &address)
	Connect a socket to a specified peer address with connect(2). More...

Address	local_address () const
	Get local address of socket with getsockname(2). More...

Address	peer_address () const
	Get peer address of socket with getpeername(2). More...

void	set_reuseaddr ()
	Allow local address to be reused sooner via SO_REUSEADDR. More...

void	shutdown (const int how)
	Shut down a socket via shutdown(2). More...

Public Member Functions inherited from FileDescriptor
	FileDescriptor (const int fd)
	Construct from a file descriptor number returned by the kernel. More...

	~FileDescriptor ()=default
	Free the std::shared_ptr; the FDWrapper destructor calls close() when the refcount goes to zero. More...

void	close ()
	Close the underlying file descriptor. More...

FileDescriptor	duplicate () const
	Copy a FileDescriptor explicitly, increasing the FDWrapper refcount. More...

std::string	read (const size_t limit=std::numeric_limits< size_t >::max())
	Read up to `limit` bytes. More...

void	read (std::string &str, const size_t limit=std::numeric_limits< size_t >::max())
	Read up to `limit` bytes into `str` (caller can allocate storage) More...

void	set_blocking (const bool blocking_state)
	Set blocking(true) or non-blocking(false) More...

size_t	write (BufferViewList buffer, const bool write_all=true)
	Write a buffer (or list of buffers), possibly blocking until all is written. More...

size_t	write (const char *str, const bool write_all=true)
	Write a string, possibly blocking until all is written. More...

size_t	write (const std::string &str, const bool write_all=true)
	Write a string, possibly blocking until all is written. More...

int	fd_num () const
	underlying descriptor number More...

bool	eof () const
	EOF flag state. More...

bool	closed () const
	closed flag state More...

unsigned int	read_count () const
	number of reads More...

unsigned int	write_count () const
	number of writes More...

	FileDescriptor (const FileDescriptor &other)=delete
	copy construction is forbidden More...

FileDescriptor &	operator= (const FileDescriptor &other)=delete
	copy assignment is forbidden More...

	FileDescriptor (FileDescriptor &&other)=default
	move construction is allowed More...

FileDescriptor &	operator= (FileDescriptor &&other)=default
	move assignment is allowed More...

Private Member Functions
	TCPSocket (FileDescriptor &&fd)
	Construct from FileDescriptor (used by accept()) More...

Additional Inherited Members
Protected Member Functions inherited from Socket
	Socket (const int domain, const int type)
	Construct via socket(2). More...

	Socket (FileDescriptor &&fd, const int domain, const int type)
	Construct from a file descriptor. More...

template<typename option_type >
void	setsockopt (const int level, const int option, const option_type &option_value)
	Wrapper around setsockopt(2). More...

Detailed Description

A wrapper around TCP sockets.

Functions in this class are essentially wrappers over their POSIX eponyms.

Example:

const uint16_t portnum = ((std::random_device()()) % 50000) + 1025;
 
// create a TCP socket, bind it to a local address, and listen
TCPSocket sock1;
sock1.bind(Address("127.0.0.1", portnum));
sock1.listen(1);
 
// create another socket and connect to the first one
TCPSocket sock2;
sock2.connect(Address("127.0.0.1", portnum));
 
// accept the connection
auto sock3 = sock1.accept();
sock3.write("hi there");
 
auto recvd = sock2.read();
sock2.write("hi yourself");
 
auto recvd2 = sock3.read();
 
sock1.close();              // don't need to accept any more connections
sock2.close();              // you can call close(2) on a socket
sock3.shutdown(SHUT_RDWR);  // you can also shutdown(2) a socket
if (recvd != "hi there" || recvd2 != "hi yourself") {
    throw std::runtime_error("wrong data received");
}

Definition at line 88 of file socket.hh.

Constructor & Destructor Documentation

◆ TCPSocket() [1/2]

TCPSocket::TCPSocket ( FileDescriptor && fd )

inlineexplicitprivate

Construct from FileDescriptor (used by accept())

Parameters

[in] fd is the FileDescriptor from which to construct

Definition at line 92 of file socket.hh.

◆ TCPSocket() [2/2]

TCPSocket::TCPSocket ( )

inline

Default: construct an unbound, unconnected TCP socket.

Definition at line 96 of file socket.hh.

Member Function Documentation

◆ accept()

TCPSocket TCPSocket::accept ( )

Accept a new incoming connection.

Returns: a new TCPSocket connected to the peer.

Note: This function blocks until a new connection is available

Definition at line 151 of file socket.cc.

◆ listen()

void TCPSocket::listen ( const int backlog = 16 )

Mark a socket as listening for incoming connections.

Parameters

[in] backlog is the number of waiting connections to queue (see listen(2))

Definition at line 146 of file socket.cc.

The documentation for this class was generated from the following files:

/home/cs144/sponge/libsponge/util/socket.hh
/home/cs144/sponge/libsponge/util/socket.cc

Public Member Functions

Private Member Functions